Self-locking type road bridge anchorage device

Abstract

The utility model discloses a self-locking type road bridge anchorage device, which relates to the field of anchorage devices and comprises an anchor plate, a plurality of circular-truncated-cone-shaped grooves are arranged on two sides of the anchor plate, small round ends of the grooves are close to the center line of the anchor plate, and communication grooves are arranged among the grooves at the same height. A plurality of wedge-shaped clamping pieces are movably installed in the groove, the inner sides of the wedge-shaped clamping pieces are arc-shaped horizontal planes, and the outer sides of the wedge-shaped clamping pieces are arc-shaped inclined planes. According to the self-locking type road bridge anchorage device, due to the fact that the groove, the wedge-shaped clamping pieces and the base plate are arranged, the steel strand is subjected to clamping force of two positions, and when the wedge-shaped clamping piece, away from the base plate, at the position of a certain steel strand is damaged, the wedge-shaped clamping pieces at the positions of the other steel strands can be normally used as long as the wedge-shaped clamping pieces at the positions of the other steel strands are normally used; the anchor plate can still be ensured to extrude the base plate by a certain tensile force, and the base plate extrudes the wedge-shaped clamping pieces on the surface of the base plate, so that the steel strand is stably clamped, and higher stability during use is ensured.

Description

Technical Field

[0001] The utility model relates to the field of anchors, in particular to a self-locking road bridge anchor. Background Art

[0002] Anchor refers to a permanent anchoring device used in prestressed concrete. It is an anchoring tool used in post-tensioned structures or components to maintain the tension of prestressed tendons and transfer it to the concrete. It is mainly used to fix and connect bridge steel strands, provide sufficient friction and clamping force to ensure the stability and bearing capacity of the steel strands. It is mainly composed of anchor plates and wedge-shaped clips. Multiple truncated cone-shaped grooves are arranged on the surface of the anchor plate, which, together with the use of wedge-shaped clips, ensure that the steel strands can be stably clamped inside the wedge-shaped clips.

[0003] The main principle is to use the friction between the wedge-shaped clip and the steel strand to move the wedge-shaped clip. The inner wall of the groove squeezes the wedge-shaped clip, which increases the pressure between the wedge-shaped clip and the steel strand, thereby ensuring the stability of the clamping. According to the calculation formula of friction force, the greater the pressure, the greater the friction, forming a virtuous cycle and realizing the self-locking function. However, if the wedge-shaped clip at a certain steel strand position slips or is damaged, there will be major problems in the fixation of the steel strand, affecting the stability of the bridge. Utility Model Content

[0004] The main purpose of the utility model is to provide a self-locking road bridge anchor, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a self-locking road bridge anchor, including an anchor plate, a plurality of truncated cone-shaped grooves are provided on both sides of the anchor plate, the small round ends of the grooves are close to the center line of the anchor plate, and connecting grooves are provided between the grooves at the same height, and a plurality of wedge-shaped clips are movably installed inside the grooves, the inner side of the wedge-shaped clips is an arc-shaped horizontal surface, and the outer side of the wedge-shaped clips is an arc-shaped inclined surface, and a pad is provided on one side of the anchor plate.

[0006] A plurality of positioning grooves are formed on the surface of the anchor plate, a plurality of positioning rods are fixedly mounted on the surface of the pad, and the positioning rods are movably mounted inside the positioning grooves.

[0007] The positioning rod and the backing plate are an integrally formed structure.

[0008] A positioning ring is fixedly installed on the side of the backing plate, and the positioning ring is sleeved on the surface of the anchor plate. The inner diameter of the positioning ring is adapted to the diameter of the anchor plate.

[0009] The positioning ring and the backing plate are an integrally formed structure.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. In the utility model, by providing grooves, wedge-shaped clips and pads, the steel strands are subjected to clamping forces at two positions. When the wedge-shaped clips at a certain steel strand position far away from the pad are damaged, as long as the wedge-shaped clips at the remaining steel strand positions are used normally, a certain pulling force can still be ensured so that the anchor plate squeezes the pad, and the pad squeezes the wedge-shaped clips on its surface, thereby stably clamping the steel strands and ensuring higher stability during use.

[0012] 2. In the utility model, by providing a positioning ring, a positioning rod and a positioning groove, the positioning rod is movably installed inside the positioning groove to ensure that the anchor plate can rest against the surface of the pad, thereby ensuring that the wedge-shaped clip can stably rest against the surface of the pad, and at the same time, it can ensure that the circular hole of the pad is aligned with the anchor plate, which is convenient for the passage of the steel strand. At the same time, the positioning ring can also limit the position of the anchor plate, which can provide support for the anchor plate to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a self-locking road bridge anchor of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the wedge-shaped clip position of a self-locking road bridge anchor of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the positioning rod position of a self-locking road bridge anchor of the utility model;

[0016] Figure 4 The utility model is a schematic cross-sectional structure diagram of an anchor plate of a self-locking road bridge anchor.

[0017] In the figure: 1, anchor plate; 2, groove; 3, connecting groove; 4, wedge-shaped clip; 5, pad; 6, positioning groove; 7, positioning rod; 8, positioning ring. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] like Figure 1-4As shown, a self-locking road bridge anchor comprises an anchor plate 1, both sides of the anchor plate 1 are provided with a plurality of truncated cone-shaped grooves 2, the grooves 2 are arranged in a circular array on the surface of the anchor plate 1, the small round ends of the grooves 2 are close to the center line of the anchor plate 1, and connecting grooves 3 are provided between the grooves 2 at the same height for steel strands to pass through the inside of the two grooves 2, a plurality of wedge-shaped clips 4 are movably installed inside the grooves 2, the inner side of the wedge-shaped clips 4 is an arc-shaped horizontal surface facing the steel strand, and the outer side of the wedge-shaped clips 4 is an arc-shaped inclined surface in contact with the inner wall of the groove 2, and a pad 5 is provided on one side of the anchor plate 1, wherein one end of the wedge-shaped clip 4 on one side abuts against the surface of the pad 5.

[0020] The steel strand is passed through the pad 5 and the anchor plate 1, and the wedge-shaped clip 4 is installed in the groove 2. At this time, the steel strand is subjected to the friction force of the wedge-shaped clip 4 on one side of the anchor plate 1, and the wedge-shaped clip 4 pulls the anchor plate 1 to squeeze the pad 5, and the pad 5 squeezes the wedge-shaped clip 4 on its surface. The wedge-shaped clip 4 squeezes the steel strand under the force of the groove 2, so that the steel strand is subjected to clamping forces at two positions. When the wedge-shaped clip 4 at a certain steel strand position away from the pad 5 is damaged, as long as the wedge-shaped clips 4 at the remaining steel strand positions are used normally, a certain pulling force can still be guaranteed to make the anchor plate 1 squeeze the pad 5, and the pad 5 squeeze the wedge-shaped clip 4 on its surface, so that the clamping of the steel strand is stable, ensuring better stability during use.

[0021] The surface of the anchor plate 1 is provided with a plurality of positioning grooves 6. In the present embodiment, the positioning grooves 6 are arranged in an annular manner on the surface of the anchor plate 1. The surface of the pad plate 5 is fixedly provided with a plurality of positioning rods 7. The positioning rods 7 are movably installed inside the positioning grooves 6 to ensure that the anchor plate 1 can rest against the surface of the pad plate 5, thereby ensuring that the wedge-shaped clip 4 can stably rest against the surface of the pad plate 5. At the same time, it can ensure that the circular hole of the pad plate 5 is aligned with the anchor plate 1 to facilitate the passage of the steel strand.

[0022] The positioning rod 7 and the backing plate 5 are integrally formed to ensure the stability of the connection between the positioning rod 7 and the backing plate 5.

[0023] A positioning ring 8 is fixedly installed on the side of the pad 5, and the positioning ring 8 is sleeved on the surface of the anchor plate 1. The inner diameter of the positioning ring 8 is adapted to the diameter of the anchor plate 1. When the anchor plate 1 is installed, it is ensured that the anchor plate 1 is located inside the positioning ring 8. The positioning ring 8 can also limit the position of the anchor plate 1, and can provide a certain support force for the anchor plate 1 to a certain extent.

[0024] The positioning ring 8 and the backing plate 5 are integrally formed to ensure the stability of the overall structure.

[0025] It should be noted that the utility model is a self-locking road bridge anchor. When in use, the steel strand is passed through the pad 5 and the anchor plate 1, the wedge-shaped clip 4 is installed in the groove 2, and the positioning rod 7 is inserted in the positioning groove 6. At this time, the steel strand is subjected to the friction force of the wedge-shaped clip 4 on one side of the anchor plate 1, and the wedge-shaped clip 4 pulls the anchor plate 1 to squeeze the pad 5, and the pad 5 squeezes the wedge-shaped clip 4 on its surface. The wedge-shaped clip 4 squeezes the steel strand under the force of the groove 2, so that the steel strand is subjected to clamping forces at two positions. When the wedge-shaped clip 4 at a certain steel strand position away from the pad 5 is damaged, as long as the wedge-shaped clips 4 at the remaining steel strand positions are used normally, a certain pulling force can still be guaranteed to make the anchor plate 1 squeeze the pad 5, and the pad 5 squeeze the wedge-shaped clip 4 on its surface, so as to stably clamp the steel strand.

[0026] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A self-locking road bridge anchor, comprising an anchor plate (1), characterized in that: A plurality of truncated cone-shaped grooves (2) are provided on both sides of the anchor plate (1), the small round ends of the grooves (2) are close to the center line of the anchor plate (1), a connecting groove (3) is provided between the grooves (2) at the same height, a plurality of wedge-shaped clips (4) are movably installed inside the grooves (2), the inner side of the wedge-shaped clips (4) is an arc-shaped horizontal surface, and the outer side of the wedge-shaped clips (4) is an arc-shaped inclined surface, and a pad (5) is provided on one side of the anchor plate (1).

2. A self-locking road bridge anchor according to claim 1, characterized in that: A plurality of positioning grooves (6) are provided on the surface of the anchor plate (1), a plurality of positioning rods (7) are fixedly mounted on the surface of the pad plate (5), and the positioning rods (7) are movably mounted inside the positioning grooves (6).

3. A self-locking road bridge anchor according to claim 2, characterized in that: The positioning rod (7) and the backing plate (5) are an integrally formed structure.

4. A self-locking road bridge anchor according to claim 1, characterized in that: A positioning ring (8) is fixedly mounted on the side of the backing plate (5), the positioning ring (8) is sleeved on the surface of the anchor plate (1), and the inner diameter of the positioning ring (8) is adapted to the diameter of the anchor plate (1).

5. A self-locking road bridge anchor according to claim 4, characterized in that: The positioning ring (8) and the backing plate (5) are an integrally formed structure.

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